Affiliations: [a] Department of Chemistry, Far Eastern State Agricultural University, Amur Region, Blagoveshchensk, Politekhnicheskaya St, 86, 675005, Russia | [b] Department of Natural Science Education, Amur Regional Institute of Education Development, Amur Region, Blagoveshchensk, Severnaya St, 107, 675005, Russia | [c] Director of Muraviovka Park, Amur Region, Blagoveshchensk, Main Post Office, 16, 675000, Russia
Abstract: The purpose of this research is to provide ecological and chemical characterization of lakes located in the Muraviovka Park, where more than 300 species of birds nest, rest and winter. High concentration of dissolved oxygen in the water of lakes that comes with as high biochemical oxygen demand (BOD5) indicates that reservoirs experience eutrophication. Concentration of biogenic organic substances is caused to fluctuate by seasonal changes in water temperature. The fires make the hydro-chemical indicators of wetlands change. Lead concentration in the water is high because it enters the water, moving from the surface layers of soil when natural areas transform into cultivated lands. Macrophytes contain an excess concentration of lead and manganese. Heavy metal concentration in fish is below permissible limits. Despite significant differences in the biology of bird species, birds living in the Muraviovka Park have great amounts of iron, copper and zinc in their feathers. Feather lead concentration was also high. The ecological state of lakes located in the Muraviovka Park is necessary to investigate in order to undertake actions to regulate economic activities.
Keywords: Lakes, heavy metals, macrophytes, eutrophication, bird habitat
